Chapter 30 vocab 2 Flashcards
1
Q
smallest and closets planet to sun
A
Mercury
2
Q
second closets planet to sun
A
Venus
3
Q
third planet from the sun
A
Earth
4
Q
fourth planet from the sun
A
Mars
5
Q
how long ago did the solar system form
A
4.6 billion years ago
6
Q
how was solar system created
A
nebula collapsed
7
Q
what type of atmosphere does Mercury have
A
no true atmosphere
8
Q
what type of atmosphere does Venus have
A
a dense atmosphere
9
Q
what is the hottest planet in the solar system
A
Venus
10
Q
what planet is referred to as Earths sister planet
A
Venus
11
Q
due to the temperatures on Earth allow water to exist as
A
solid, a liquid, and a gas
12
Q
what is Mars also called
A
red planet
13
Q
why is Mars red
A
because of iron oxide
14
Q
how many moons does Mars have
A
Phobos and Deimos
15
Q
what does Phobos mean
A
FEAR
